diff --git a/modules/spock/build.gradle b/modules/spock/build.gradle
index 2ff27ecbace..04d80ca403b 100644
--- a/modules/spock/build.gradle
+++ b/modules/spock/build.gradle
@@ -28,6 +28,7 @@ tasks.withType(GroovyCompile) {
     sourceCompatibility = '1.8'
     targetCompatibility = '1.8'
     options.encoding = 'UTF-8'
+    groovyOptions.optimizationOptions.indy = true
 }
 
 sourceJar {